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Windows 10 will not recognize secondary hard drive.

Hi. I've just built myself a new system using an Asus Prime 7270-A motherboard. I have successfully installed an SSD drive and have successfully installed Windows 10 (64 bit) on this. I am now trying to install additional HDDs. I have wired in a brand new (non-formatted) 1TB WD Blue drive. The connections appear to be fine and the drive is recognized by the BIOS. It is not recognized by Windows. Not only does in not show up under "my computer", it does not show up under disk management or any of the system administrative tools. I've tried every trick I can find on the internet and nothing seems to work. What am I missing? ANY thoughts would be greatly appreciated. Cheers.

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Clarification Request
Wait, what is this P5 and P6? Port numbers?

In reply to: Windows 10 will not recognize secondary hard drive.

When installing HDDs and SSDs we start at the lowest numbered ports and go up. Why are your drives on Port 5 and 6? Could be trouble on some boards.

Also, when I start a new build the BIOS is always made current because issues like HDD compatibility and more are often fixed over time.

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P5 and P6.

In reply to: Wait, what is this P5 and P6? Port numbers?

I flashed the board and updated to the most recent BIOS. I moved the drives around but no matter what ports I used they always came up as P5 and P6. The 1TB drive was identified as a 2TB drive regardless of the port used. Finally, the B2 memory slot would often fail during start up and would prevent the board from posting. The board is defective - Asus agrees and I will be returning it. Cheers.

All Answers

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In reply to: Windows 10 will not recognize secondary hard drive.

After this install of the OS did you install the mobo drivers?

Have you tried a different sata port on the mobo?

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Tried that

In reply to: Hdd

Yes to both, but with no luck. The other think that is really odd is that the motherboard is reporting it as a 2TB drive despite it being a 1TB drive. Here is the Boot Priority menu of my BIOS:

Windows boot manager (P6 ADATA SP550)
P6: ADATA SP550 (457862MB)
P5: (2097152MB)

P5 is the new drive (this line disappears if I disconnect the drive). Another issue I'm having is that it generally takes several attempts to get the computer to start up. The fans come on but the BIOS screen and Windows do not come up. I have to turn it on and off and hit the reset button several times before it boots. Once it starts I have no issues. The mother board has integrated RGB lights and these remain on when the computer is turned off (the only way to shut them off is to also turn off the power supply). Is this normal?

Here are my complete computer specs:

Asus Prime 7270-A motherboard
i7-7700K processor
CORSAIR Vengeance LPX 16GB (2x 8GB) DDR4 DRAM 3000MHz
MSI GeForce GTX 1080 GAMING X 8G Video Card
Corsair Carbide Series 270R - Mid-Tower ATX Case
EVGA SuperNOVA 650 G1, 80+ GOLD 650W power supply
ADATA Premier SP550 480 GB 2.5" SATA III Solid State Drive
1TB 3.5" 7200 RPM SATA III 64MB Cache

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(NT) NT - Have you looked for it in Device Manager?

In reply to: Tried that

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Device Manager

In reply to: NT - Have you looked for it in Device Manager?

"Have you looked for it in Device Manager?" Of course. As mentioned it does not show up in any of the menus or administrative tools.

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Odd stuff going on.

In reply to: Device Manager

Have you tried shorting the CMOS so the BIOS will reset to default values, also get rid of any "glitch" it may have developed?

As for the RGB lights staying on, those are mounted on the motherboard itself? They aren't USB connected? I think most motherboards today keep the 5V power to USB circuit active, even when turned off, so long as the PSU is still on. Reason now being the USB ports are used so much more for device charging while computer is turned off.

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In reply to: Odd stuff going on.

The RGB lights are integrated into the board itself... apparently they are meant to stay on. Thanks for the input. AS it turns out, the board is defective and I will be replacing it.

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(NT) NT - thanks for the info

In reply to: Lights

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Start up

In reply to: Tried that

Disconnect the ssd and the hdd.
Power the machine on.
Do you get a bios screen?
If so power off and wait a min then power on and test again.
You must get that bios screen every time.

No idea about lights, I don't buy stuff that looks like a xmas tree.

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XMass Tree

In reply to: Start up

The BIOS loads without either hard drive connected.

I also have little interest in the lights; the Z270-A is a good board at a good price. I am surprised that the lights stay on indefinitely when the power is off. I was looking for advice on what I thought might be a possible short; insults are less helpful. Cheers.

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No insult intended

In reply to: XMass Tree

I'm just not into glitz so I have no idea about lights.
Look in the mobo manual and see if it says anything.

If your sure that bios screen comes up every time with no disk connected then connect the ssd and test again.

If that works connect the hdd and test again.

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Re: disk

In reply to: Windows 10 will not recognize secondary hard drive.

- Does the disk show up if you put it in another PC?
- Does the disk show up if you put it in an external enclosure?
- Does another disk show up in this PC?
- Does Linux see it in this PC?

Answering these questions should help to see if it's a motherboard/BIOS issue, a disk issue or a Windows issue.

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Motherboard was the Issue

In reply to: Re: disk

The mother board developed other issues (it would not recognize one of my memory sticks). I did extensive trouble shooting and contacted Asus. They agreed the motherboard was defective. I will receive a new one tomorrow. Fingers crossed that this one works.

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